BI358 Exam 3 Clickers Questions With Complete Solutions

BI358 Exam 3 Clickers Questions With Complete Solutions


25. Non-synonymous mutations can be affected by...

1. Purifying selection.
2. Genetic drift.
3. Positive selection (beneficial mutations).
4. Both 1 and 2 are true.
5. Both 1 and 3 are true.
6. Both 2 and 3 are true.
7. All, 1, 2, and 3 are true.
7. All, 1, 2, and 3 are true.
26. To compare rates of protein evolution (ω) we
standardize KA by KS (KA/KS) because…
1. KS provides a reasonable estimate of the mutation rate (µ).
2. Mutations are more likely to occur at non-synonymous sites.
3. Mutation rate varies across the genome.
4. Both 1 and 2 are true.
5. Both 1 and 3 are true.
6. Both 2 and 3 are true.
7. All, 1, 2, and 3 are true.
*Note: There is a very similar question in another practice
exam. Use the same question, but answer it using the following
answers

,1. KS varies substantially among gene regions.
2. Mutations are more likely to occur at synonymous sites.
3. Non-synonymous substitution rates are higher when KS is
lower.
4. Both 1 and 2 are true.
5. Both 1 and 3 are true.
6. Both 2 and 3 are true.
7. All, 1, 2, and 3 are true.
5. Both 1 and 3 are true.
*1. KS varies substantially among gene regions
27. More essential (older) proteins tend to ...

1. Have higher expression levels.
2. Occur in regions with lower recombination.
3. Have higher levels of connectivity within metabolic networks.
4. Both 1 and 2 are true.
5. Both 1 and 3 are true.
6. Both 2 and 3 are true.
7. All, 1, 2, and 3 are true.
7. All, 1, 2, and 3 are true.
28. What is true of epigenetic variation?

1. Causes directed (nonrandom) changes in gene expression.
2. Changes can be reversed.
3. Transgenerational epialleles are common in plants but not in

,animals.
4. Both 1 and 2 are true.
5. Both 1 and 3 are true.
6. Both 2 and 3 are true.
7. All, 1, 2, and 3 are true.
7. All, 1, 2, and 3 are true.
29. Most often, the evolution of novel protein function is
enabled by .....
1. Enzymes that have catalytic ability for multiple reactions.
2. Genome duplication.
3. Evolution of genes present as single copies.
4. Both 1 and 2 are true.
5. Both 1 and 3 are true.
6. Both 2 and 3 are true.
7. All, 1, 2, and 3 are true.
4. Both 1 and 2 are true.
30. After duplication one gene copy obtains a novel function (it
did not previously have this function). This is most consistent
with ....

1. Neofunctionalization (MDN).
2. Subfunctionalization (DDC and EAC).
3. Dosage selection (FDS).
4. Small scale duplications (SSD).
5. Whole genome duplication (WGD).
6. Diploidization.
7. Paleopolyploidy (ancestral polyploidy).

, 1. Neofunctionalization (MDN).
31. After duplication both gene copies maintain the same
function but are expressed in different tissues. This is most
consistent with ....

1. Neofunctionalization (MDN).
2. Subfunctionalization (DDC and EAC).
3. Dosage selection (FDS).
4. Small scale duplications (SSD).
5. Whole genome duplication (WGD).
6. Diploidization.
7. Paleopolyploidy (ancestral polyploidy).
2. Subfunctionalization (DDC and EAC).
32. Duplication results in multiple copies of the same gene that
retain the same function and are subject to the same control
region.

1. Neofunctionalization (MDN).
2. Subfunctionalization (DDC and EAC).
3. Dosage selection (FDS).
4. Small scale duplications (SSD).
5. Whole genome duplication (WGD).
6. Diploidization.
7. Paleopolyploidy (ancestral polyploidy).
3. Dosage selection (FDS).
33. What is true of species concepts?